Ecology and Symbiosis

When predator numbers decrease, prey numbers ____________ because fewer of them are being consumed.

• decrease

• increase

• stay the same

• divide in half

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

In some grassland ecosystems, lions are predators that consume zebras. In several estuary ecosystems, fish lice are parasites that consume the blood of fish. How are these two relationships of predation and parasitism similar?

• Only one organism in each relationship

  dies.

• Both organisms in each relationship are

  harmed.

• Only one organism in each relationship benefits.

• Neither organism in each relationship is

  harmed.

Tags

NGSS.MS-LS2-2

Remoras are small fish that attach to sharks but do not harm them. When sharks tear prey apart, remoras eat the leftovers. What relationship do remoras have with sharks?

• mutualism

• parasitism

• predator-prey

• commensalism

A relationship in which one organism benefits and the other is unaffected.

• mutualism

• parisitism

• symbiosis

• commensalism

Predator-prey interactions are an important biotic factor for both predator and prey populations.

• True

• False

• Tom Brady

• Frolic

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

A tapeworm and a cat have this type of relationship.

• mutualism

• parasitism

• commensalism

• competition

What type of symbiosis?  Hummingbirds feed on nectar from flowers.  The flowers are pollinated by hummingbirds as they move from flower to flower.

• commensalism

• mutualism

• parasitism

• predation

Tags

NGSS.MS-LS2-2

A relationship between two organisms in which one organism benefits and the other is unharmed...

• Mutualism 

• Competition

• Parasitsm 

• Commensalism 

What are examples of pioneer species in a primary succession?

• Bushes and Shrubs

• Oak trees

• Mossess and Lichens 

• A rose Bush

Symbiosis is split into two words which are sym- and -bio what do those two sym and bio mean

• life and together=living together

• life and apart

• life and relationship

• none of the above